How to call a controller method from a button in rails 4

Question

So I feel really stupid right now, but I can\'t seem to find an answer.

So I have a method which needs to be called EXACTLY once, and since this is only the experime

Answer 1

It's as easy as adding method_controller_path to the HTML.
For instance, I have a route filaments/new, and to add a button that links to it from any view:
<%= button_to "Add", new_filament_path, method: :get %>